Looks fun.
Gym leader looks like an island castaway who spends most of his time fishing with his Pokemon, and doesn't reveal himself to be a powerful trainer until you find his hidden island. The gym is on that hidden island, like a mirage island, and the gym challenge is finding it. This would involve having to look for the right currents and weather conditions for it to appear, which is signaled by big schools of Magikarp. They swim to the island hoping to climb its waterfall to evolve into Gyarados. The battle takes place on a shallow lake, and the Milotic, and later Tapu Fini, are sort of meant to invoke a Lady of the Lake kind of thing.
The badge is called the Flowing Badge, and meant to invoke the water cycle. Also the circle of life, because the Magikarp that fail the climb tend to be plucked up by the hungry seabird Pokemon around. It doesn't stop them from trying. Neither does it stop you.
You should likely wait for the rain to stop before challenging him, since obviously the rain benefits water Pokemon. But if you beat him in the rain, he might give you something better than a badge, like a mega stone.
>>58311564Based Cradily/Kabutops enjoyer
>>58311763Always wanted a dark specialist to be an illusion type, I like it
>>58312102That's actually a fun gimmick
>>58315473hey what the fuck, I also came up with an actor electric gym leader a while back
>>58319471Could you add custom megas? Like, just add an option to indicate a Pokemon that doesn't have an official mega will mega, like mega symbol a player can put on one of their pokemon.